Organization for Economic Co-Operation and Development (OECD) has conducted a series of educational assessments in many OECD and non-OECD countries to support their sustainable economic growth since 2000. These assessments are named Program for International Student Achievement (PISA); they focus on the capabilities of 15-year olds in three main…

Purpose: The overall purpose of the European Union-funded Leadership Improvement for Student Achievement (LISA) project was to explore how leadership styles, as conceptualized in the developed dynamic holistic leadership framework, directly or indirectly affect student achievement at the lower secondary level of education in seven European…

This study investigated how perceived stress, social support, and home-based physical activity affected older adults' fatigue, loneliness, and depression. We also explored whether social support and physical activity mediated the relationships between stress and mental health problems. The data of 163 older participants were analyzed in this…

This study uses a multi-level multivariate propensity score matching approach to examine the synthetic cohort design (SCD) in estimating the schooling effect on mathematics proficiency of the focal cohort 2 (8th graders). Collecting 7th and 8th graders at the same time point, the SCD is sufficient in estimating the schooling effect under the…

Despite substantial evidence that women suffer from depression at twice the rate of men, the etiology for this difference remains unclear. Prior to puberty, the difference in depression is negligible; however, when adolescence begins, a precipitous rise in female depression occurs that persists across the lifespan. While no definitive biological…

As the use of contracting for Information Technology (IT) services steadily increases, IT managers are challenged with reconciling the need for flexibility achieved through the use of contract workers, with the need to understand the factors that maximize the performance and behaviors of contract and permanent IT workers. While several research…

With the overarching goal of improving scientific literacy for all, the emphasis on science achievement had been expanding all over the world. In this study, I examined the total, direct and indirect effects of inquiry-based science instruction on U. S. 8th graders' science achievement through attitudes toward science. I also examined the…

The purpose of this paper was to test the relationship between principals' instructional leadership and teacher collaboration around instruction to determine whether these measures were statistically related and whether, together, they were associated with academic achievement in elementary schools. Data were obtained from 1605 teachers in 96…

Objective: The purpose of the current study was to demonstrate the replicable nature of statistical suppressor effects in coping research through 2 examples with African American adolescents from low-income communities. Method: Participants in the 1st example included 497 African American adolescents (mean age = 12.61 years, SD = 0.99; 57% female)…

Although studies investigating the validity of positive affectivity and negative affectivity in children have been supportive, investigations of changes in the structure of affect across childhood have demonstrated mixed results. The current study used confirmatory factor analytic techniques to test one-factor, two-factor correlated, and…

Past research has shown that valuing gender conformity is associated with both positive and negative consequences for self-esteem and positive affect. The current research (women, n= 226; men, n= 175) explored these conflicting findings by separating out investing in societal gender ideals from personally valuing one's gender identity ("private…

This study examines the association between adolescents' relational schemas and their subjective understanding of interactions in the context of male-female romantic relationships. We employed an innovative multimodal methodology: the video-recall system [Welsh, D. P., & Dickson, J. W. (2005). Video-recall procedures for examining subjective…

In this study, we compared the effects of two experimental multiple-strategy approaches (content-area comprehension and vocabulary) to typical fourth-grade social studies instructional practices. An 18-week, cluster-randomized study was conducted to estimate effects measured by normative-referenced reading comprehension and vocabulary measures and…

Although the role of school engagement in influencing children's academic competence has been recognized in past theory and research, how school engagement may mediate the relationships between ecological and personal resources and academic competence remains largely unknown. Using structural equation modeling procedures, the present study was…

This study examined pre-service teachers' self-reported behavioral intentions to use technology. Three hundred and fourteen participants completed a survey questionnaire measuring their responses to six constructs from a research model that extends the technology acceptance model (TAM) by including facilitating conditions and subjective norm.…